What Forces Act on a Descending Cylinder Attached to a Tape?

[kjn11994]

Homework Statement

A cloth tape is wound around the outside of a uniform solid cylinder (mass M, radius R) and fastened to the ceiling as shown in the diagram below. They cylinder is held with the tape vertical and then released from rest. as the cylinder descends, it unwinds from the tape without slipping. The moment of inertia of a uniform solid cylinder about its center is 1/2MR^2.

diagram: http://imgur.com/h0v07

what are the forces acting on the cylinder?

Homework Equations

The Attempt at a Solution

http://imgur.com/eyjPP

so far I'm pretty sure there should be tension in the tape, force of gravity, some torque and (mv^2)/r but I have no clue which directions they should go if they even apply

 

[Saitama]

The question is asking about only forces, not torques.

 

[kjn11994]

so then, would these be all of the forces?

http://imgur.com/ofZTp